CN111574655B - Water-soluble disintegrating type ball-throwing cage and preparation method thereof - Google Patents
Water-soluble disintegrating type ball-throwing cage and preparation method thereof Download PDFInfo
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- CN111574655B CN111574655B CN202010512911.8A CN202010512911A CN111574655B CN 111574655 B CN111574655 B CN 111574655B CN 202010512911 A CN202010512911 A CN 202010512911A CN 111574655 B CN111574655 B CN 111574655B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F218/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
- C08F218/02—Esters of monocarboxylic acids
- C08F218/04—Vinyl esters
- C08F218/08—Vinyl acetate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention discloses a water-soluble disintegrating type pitching cage and a preparation method thereof. According to the invention, hydrophilic and hydrophobic mixed monomers are polymerized into the water-soluble disintegrating composite material, and the prepared composite material has the advantages of adjustable water-soluble disintegrating time, good flexibility and good storage stability, and can fully meet the requirements of oilfield on-site profile control.
Description
Technical Field
The invention relates to the technical field of oil extraction and gas production engineering in the petroleum industry, in particular to a water-soluble disintegrating type pitching cage and a preparation method thereof.
Background
The ball throwing profile control technology is a low-cost technology developed aiming at uneven water absorption profile of a water injection well and higher cost of conventional separate injection and chemical profile control measures, and has the technical principle that a blocking ball with the density equal to the density of injected water is thrown into the water injection well, the blocking ball preferentially reaches the vicinity of a blast hole of a high water absorption layer under the action of dynamic water flow of the injected water and blocks the blast hole under the action of water injection pressure difference, so that the distribution of the injected water layer is changed, and the water absorption capacity of a main water absorption layer is reduced.
The technological operation of the plugging ball entering the water injection pipe column comprises the following steps: firstly, a certain amount of plugging balls are filled into a water-soluble high polymer composite ball cage material, and the ball cage material enters a water injection pipe column through a ball injection device. Under the action of water flow and gravity, the ball cage material is delivered to the underground, the plugging adjusting ball is released from the water-soluble ball cage material, and under the action of the driving force of the underground liquid flow, the plugging adjusting ball moves towards the direction of the well wall, so that the high-permeability blast hole is plugged.
The water-soluble polymer is a hydrophilic polymer material which can be dissolved or swelled in water to form a solution or dispersion. The hydrophilicity of the water-soluble polymer is derived from hydrophilic groups contained in the molecule. These groups impart not only hydrophilicity to the polymer but also a number of valuable properties to it, such as film-forming, lubricating, gelling, dispersing and thickening properties. Water-soluble polymers can be divided into three main groups: natural water-soluble high polymer, semi-synthetic water-soluble high polymer and synthetic water-soluble high polymer. The natural water-soluble high polymer is prepared from plants or animals. The most common of these products are starches, seaweeds, vegetable gums, animal gums and microbial gums. The semi-synthetic water-soluble high polymer is obtained by chemically modifying natural substances. Common varieties are: carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, oxidized starch, and the like. The synthetic water-soluble polymers include both polymers and condensation polymers. The polymerization products include polyvinyl alcohol, polyacrylic acid, polyethylene glycol and the like, and the condensation products include water-soluble epoxy resin, phenolic resin, polyurethane resin and the like.
The water-soluble high polymer has the advantages of no color, no odor, no toxicity, no release of harmful gases when being heated and decomposed, no environmental pollution and the like, and the characteristics ensure that the water-soluble high polymer is widely applied to a forming process. However, the water-soluble high polymer used conventionally has too fast water-soluble degradation time, and after the water-soluble high polymer is prepared into a ball cage material of the plugging ball, the ball cage material is not sent to the vicinity of a blast hole, and the ball cage material is dissolved, so that the plugging ball cannot be effectively sent to the vicinity of the blast hole, and the effect of the plugging ball is seriously influenced. Therefore, the water-soluble disintegrating type composite ball cage material prepared by a proper method after 2-3 hours is controllable has extremely important practical application value.
Disclosure of Invention
Aiming at the technical problems, the invention provides a water-soluble disintegrating type ball-throwing cage and a preparation method thereof, hydrophilic and hydrophobic mixed monomers are polymerized into a water-soluble disintegrating type composite material, and the prepared composite material has adjustable water-soluble disintegrating time, good flexibility and good storage stability and can fully meet the requirements of oil field on-site profile control.
As an object of the invention, the invention provides the following technical scheme:
a water-soluble disintegrating type ball throwing cage comprises the following components in percentage by weight:
4 to 6 percent of sodium acrylate
0.5 to 0.8 percent of lauroyl peroxide
0.4 to 0.8 percent of triglycerol monostearate
0.1 to 0.3 percent of dibutyltin dilaurate
0.3 to 1 percent of sodium persulfate
6 to 9 percent of styrene
0.5 to 1 percent of dicumyl peroxide,
Divinyl benzene 0.5-0.9%
2.5 to 3.5 percent of butanol
Vinyl acetate 9-12%
1 to 2 percent of sodium hydroxide
62.7 to 75.2 percent of deionized water.
Preferably, it is prepared by the following method: sequentially adding weighed sodium acrylate, lauroyl peroxide, triglycerol monostearate, dibutyltin dilaurate and deionized water into a reaction kettle, and fully stirring for 20-60 minutes to uniformly mix the components; introducing nitrogen to drive oxygen, slowly heating to 60-75 ℃, dropwise adding a mixed solution of sodium persulfate and deionized water, and continuously stirring for reaction for 3-5 hours; adding a certain amount of mixed solution of styrene, dicumyl peroxide, divinylbenzene and butanol under the conditions of constant temperature and constant stirring speed, stirring and reacting for 2.5-3.5 hours, adding mixed solution of vinyl acetate, sodium hydroxide and deionized water in a certain mass ratio, raising the reaction temperature to 68-75 ℃, introducing nitrogen again to drive oxygen, and continuing stirring and reacting for 4-6 hours to prepare the water-soluble disintegrating composite material; and pouring the composite material into a ball cage mould at 280 ℃ for shaping and cooling to obtain the water-soluble disintegrating type composite ball cage.
Preferably, the deionized water is added in three times in a ratio of 6: 1: 3.
preferably, the water-soluble disintegration type composite ball cage has the water-soluble disintegration time of 2-3 h.
As another object of the present invention, the present invention further provides a preparation method of the water-soluble disintegrating type ball-throwing cage, which specifically comprises:
(5) sequentially adding weighed sodium acrylate, lauroyl peroxide, triglycerol monostearate, dibutyltin dilaurate and deionized water into a reaction kettle, and fully stirring for 20-60 minutes to uniformly mix the components;
(6) introducing nitrogen to drive oxygen, slowly heating to 60-75 ℃, dropwise adding a mixed solution of sodium persulfate and deionized water, and continuously stirring for reaction for 3-5 hours;
(7) adding a mixed solution composed of weighed styrene, dicumyl peroxide, divinylbenzene and butanol under the conditions of constant temperature and constant stirring speed, stirring and reacting for 2.5-3.5 hours, adding a mixed solution of vinyl acetate, sodium hydroxide and deionized water in a certain mass ratio, raising the reaction temperature to 68-75 ℃, introducing nitrogen again to drive oxygen, and continuing stirring and reacting for 4-6 hours to prepare the water-soluble disintegrating composite material;
(8) and pouring the composite material into a ball cage mould at 280 ℃ for shaping and cooling to obtain the water-soluble disintegrating type composite ball cage.
Preferably, in step (2), the reaction is slowly heated to 135 ℃ and stirred for 4 hours.
Preferably, the reaction temperature is raised to 70 ℃ in step (3), and the reaction is continued with stirring for 5 hours.
Preferably, the deionized water is added in the steps (1) to (3) in a ratio of 6: 1: 3.
according to the existing ball throwing profile control matched ball cage, from the aspects of field use and indoor evaluation, the material is dissolved for a short time, the material is generally dissolved and collapsed within 20-40 min, and the wall of the ball cage is broken within 1h, so that a blocking adjusting ball is released too early and cannot be completely carried and released at fixed time. The ball cage material prepared by the invention has controllable dissolution and disintegration time, good flexibility and good storage stability, and can prolong the dissolution and disintegration time by more than 1 time to 2-3 hours under the condition of the same dosage and same thickness production process. The ball cage can be guaranteed to have sufficient time for moving without dissolving and breaking in advance to release small balls, and the ball cage can be prevented from being blocked at other positions of a well mouth and a shaft and the like, so that sufficient time is provided for processing.
Detailed Description
The technical solutions and advantages of the present invention will be explained and explained in more detail with reference to the detailed embodiments of the specification. It should be understood that the contents presented in the description and the detailed description are only for more clearly illustrating the technical solution and the advantages thereof, and do not limit the protection scope of the present invention. On the basis of the disclosure of the specification, a person skilled in the art can modify the technical solution according to various reasonable changes, and the modified technical solution is included in the protection scope of the invention as long as the person does not depart from the spirit of the invention.
A water-soluble disintegrating type ball throwing cage comprises the following components in percentage by weight:
4 to 6 percent of sodium acrylate
0.5 to 0.8 percent of lauroyl peroxide
0.4 to 0.8 percent of triglycerol monostearate
0.1 to 0.3 percent of dibutyltin dilaurate
0.3 to 1 percent of sodium persulfate
6 to 9 percent of styrene
0.5 to 1 percent of dicumyl peroxide,
Divinyl benzene 0.5-0.9%
2.5 to 3.5 percent of butanol
Vinyl acetate 9-12%
1 to 2 percent of sodium hydroxide
62.7 to 75.2 percent of deionized water.
In the following examples, the preparation method of the water-soluble disintegrating type ball-throwing cage specifically comprises the following steps:
the stirrer and the condensing device are arranged and are communicated with N2The sodium acrylate, the lauroyl peroxide, the triglycerol monostearate, the dibutyltin dilaurate and the deionized water are added into the four-mouth bottle according to a certain mass ratio, and the mixture is fully stirred for 30 minutes to uniformly mix the components. Introducing nitrogen to drive oxygen, slowly heating to 65 ℃, dripping a mixed solution of sodium persulfate and deionized water, and continuously stirring for reaction for 4 hours. Adding a certain amount of mixed solution of styrene, dicumyl peroxide, divinylbenzene and butanol under the conditions of constant temperature and constant stirring, stirring for reacting for 3 hours, adding mixed solution of vinyl acetate, sodium hydroxide and deionized water in a certain mass ratio, raising the reaction temperature to 70 ℃, introducing nitrogen again for removing oxygen, and continuing stirring for reacting for 5 hours to obtain the water-soluble disintegrating composite material. And pouring the materials into a 280 ℃ ball cage die for shaping and cooling to obtain the water-soluble disintegrating type composite ball cage material.
According to the charging sequence, the water-soluble disintegrating composite material with controllable water-soluble disintegrating time, good flexibility and good storage stability can be obtained, otherwise the performances of the composite material are affected.
Example 1
The water-soluble disintegrating type ball throwing cage comprises the following components: 4% of sodium acrylate, 0.5% of lauroyl peroxide, 0.4% of triglycerol monostearate, 0.1% of dibutyltin dilaurate, 0.3% of sodium persulfate, 6% of styrene, 0.5% of dicumyl peroxide, 0.5% of divinylbenzene, 2.5% of butanol, 9% of vinyl acetate, 1% of sodium hydroxide and the balance of deionized water, wherein the total amount is 100%.
Example 2
The water-soluble disintegrating type ball throwing cage comprises the following components: 6% of sodium acrylate, 0.8% of lauroyl peroxide, 0.8% of triglycerol monostearate, 0.3% of dibutyltin dilaurate, 1% of sodium persulfate, 9% of styrene, 1% of dicumyl peroxide, 0.9% of divinylbenzene, 3.5% of butanol, 12% of vinyl acetate, 2% of sodium hydroxide and the balance of deionized water, wherein the total amount is 100%.
Example 3
The water-soluble disintegrating type ball throwing cage comprises the following components: 5% of sodium acrylate, 0.6% of lauroyl peroxide, 0.6% of triglycerol monostearate, 0.2% of dibutyltin dilaurate, 0.5% of sodium persulfate, 8% of styrene, 0.8% of dicumyl peroxide, 0.7% of divinylbenzene, 3% of butanol, 11% of vinyl acetate, 1.5% of sodium hydroxide and the balance of deionized water, wherein the total amount is 100%.
Example 4
The water-soluble disintegrating type ball throwing cage comprises the following components: 4.5% of sodium acrylate, 0.7% of lauroyl peroxide, 0.7% of triglycerol monostearate, 0.15% of dibutyltin dilaurate, 0.7% of sodium persulfate, 7% of styrene, 0.6% of dicumyl peroxide, 0.6% of divinylbenzene, 2.5% of butanol, 12% of vinyl acetate, 2% of sodium hydroxide and the balance of deionized water, wherein the total amount is 100%.
Example 5
The water-soluble disintegrating type ball throwing cage comprises the following components: 5.5% of sodium acrylate, 0.5% of lauroyl peroxide, 0.8% of triglycerol monostearate, 0.25% of dibutyltin dilaurate, 0.5% of sodium persulfate, 6.5% of styrene, 0.7% of dicumyl peroxide, 0.8% of divinylbenzene, 3% of butanol, 10% of vinyl acetate, 2% of sodium hydroxide and the balance of deionized water, wherein the total amount is 100%.
Test examples
The products prepared in the above examples were subjected to performance testing.
The detection results are as follows:
Claims (4)
1. the water-soluble disintegrating type ball throwing cage is characterized by being prepared from the following components in percentage by weight:
4-6% of sodium acrylate
0.5-0.8% of lauroyl peroxide
0.4-0.8% of triglycerol monostearate
0.1-0.3% of dibutyltin dilaurate
0.3 to 1 percent of sodium persulfate
6-9% of styrene
Dicumyl peroxide 0.5% -1%
Divinylbenzene 0.5-0.9%
Butanol 2.5% -3.5%
Vinyl acetate 9% -12%
1 to 2 percent of sodium hydroxide
62.7% -75.2% of deionized water;
the preparation method comprises the following steps: sequentially adding sodium acrylate, lauroyl peroxide, triglycerol monostearate, dibutyltin dilaurate and deionized water into a reaction kettle, and fully stirring for 20-60 minutes to uniformly mix the components; introducing nitrogen to drive oxygen, slowly heating to 60-75 ℃, dropwise adding a mixed solution of sodium persulfate and deionized water, and continuously stirring for reaction for 3-5 hours; adding a mixed solution consisting of styrene, dicumyl peroxide, divinylbenzene and butanol under the conditions of constant temperature and constant stirring, stirring and reacting for 2.5-3.5 hours, adding a mixed solution of vinyl acetate, sodium hydroxide and deionized water, raising the reaction temperature to 68-75 ℃, introducing nitrogen again to expel oxygen, and continuing to stir and react for 4-6 hours to prepare the water-soluble disintegrating composite; and pouring the composite material into a ball cage mould at 280 ℃ for shaping and cooling to obtain the water-soluble disintegrating type composite ball cage.
2. The water-soluble disintegrating ball throwing cage according to claim 1, wherein the deionized water is added in three times in a ratio of 6: 1: 3.
3. the preparation method of the water-soluble disintegrating type ball throwing cage according to claim 1 or 2, which is characterized by comprising the following specific steps:
(1) sequentially adding sodium acrylate, lauroyl peroxide, triglycerol monostearate, dibutyltin dilaurate and deionized water into a reaction kettle, and fully stirring for 20-60 minutes to uniformly mix the components;
(2) introducing nitrogen to drive oxygen, slowly heating to 60-75 ℃, dropwise adding a mixed solution of sodium persulfate and deionized water, and continuously stirring for reaction for 3-5 hours;
(3) adding a mixed solution consisting of styrene, dicumyl peroxide, divinylbenzene and butanol under the conditions of constant temperature and constant stirring, stirring and reacting for 2.5-3.5 hours, adding a mixed solution of vinyl acetate, sodium hydroxide and deionized water, raising the reaction temperature to 68-75 ℃, introducing nitrogen again to expel oxygen, and continuing to stir and react for 4-6 hours to prepare the water-soluble disintegrating composite;
(4) and pouring the composite material into a ball cage mould at 280 ℃ for shaping and cooling to obtain the water-soluble disintegrating type composite ball cage.
4. The production method according to claim 3, wherein the reaction temperature is raised to 70 ℃ in the step (3), and the reaction is continued for 5 hours with stirring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010512911.8A CN111574655B (en) | 2020-06-08 | 2020-06-08 | Water-soluble disintegrating type ball-throwing cage and preparation method thereof |
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| CN202010512911.8A CN111574655B (en) | 2020-06-08 | 2020-06-08 | Water-soluble disintegrating type ball-throwing cage and preparation method thereof |
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| CN111574655B true CN111574655B (en) | 2022-05-20 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4835231A (en) * | 1986-08-26 | 1989-05-30 | Nippon Paint Co., Ltd. | Disintegration type, crosslinked acrylic resin particles |
| CN1523055A (en) * | 2003-09-09 | 2004-08-25 | �ൺ�Ƽ���ѧ�߷��ӿ�ѧ�빤��ѧԺ | Water disintegration type environment friendly macromolecule blended material and preparing method thereof |
| JP2013540874A (en) * | 2010-10-29 | 2013-11-07 | ベランドテクノロジー アーゲー | Water-soluble or water-disintegrable copolymer |
-
2020
- 2020-06-08 CN CN202010512911.8A patent/CN111574655B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4835231A (en) * | 1986-08-26 | 1989-05-30 | Nippon Paint Co., Ltd. | Disintegration type, crosslinked acrylic resin particles |
| CN1523055A (en) * | 2003-09-09 | 2004-08-25 | �ൺ�Ƽ���ѧ�߷��ӿ�ѧ�빤��ѧԺ | Water disintegration type environment friendly macromolecule blended material and preparing method thereof |
| JP2013540874A (en) * | 2010-10-29 | 2013-11-07 | ベランドテクノロジー アーゲー | Water-soluble or water-disintegrable copolymer |
| CN106883339A (en) * | 2010-10-29 | 2017-06-23 | 贝兰德科技股份有限公司 | Water-soluble or the disintegratable in water copolymer |
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